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How important are the light in fish only tank

Nont

Member
Joined
14 Dec 2021
Messages
186
Location
Thailand
Hi guys,


I have never had a light turn on or even had proper lightings in a non-planted fish tank. It never strikes me that I need one until I read about fishkeeping cruelty yesterday. Now I’m wondering if it is consider cruel to not have one, and is it really nescessary in a fish tank?
 

seedoubleyou

Member
Joined
29 Mar 2022
Messages
560
Location
Windsor
IMO it’s not a necessity provided the tank is in a well lit room.

If it’s fairly dark. Then yes I’d say some lighting would be beneficial to your fish, depending on the species.
 

PARAGUAY

Member
Joined
13 Nov 2013
Messages
2,902
Location
Lancashire
I once visited a Pet Store mostly catering for hamsters,rabbits, budgies, dogs cats and the like but they had a a small selection of tanks with Tropical and small Coldwater fish , filtration by,sponge air driven filters lit only by natural daylight from the shop windows all the fish were in excellent condition, pristine look about the tanks
 

mort

Member
Joined
15 Nov 2015
Messages
2,261
For some fish I think not having a light (provided they get some daylight or illumination from other sources) is preferable. Rivers aren't always very bright and some fish like to hide away from the sun's rays. I don't think it's cruel provided they are able to see enough to comfortably eat and go about a normal life. With bright indirect light into the room you may be providing more light than they would get in heavily tannin coloured water or under dense vegatation.
On the flip side there could be an arguement made for some of our fish species being in tanks with to much light.
 

castle

Member
Joined
19 Dec 2015
Messages
985
Location
UK
I suspect most fish are kept in too much light. It’s now a balancing act between enough light for plants, and not too much light to cause undue skittishness.

From my experience, brighter lights contribute to far more skittish fish.

In the fish room I’m building I’m moving away from planted tanks, except for the obvious low light plants. Need to work out how many watts are needed to grow pothos tho 😅 this also isn’t made easier with the increasing cost of electricity.
 
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